Abstract
A combination of 1H, 11B, and 13C n.m.r. spectroscopy is used to determine the identity, structure, and stability of compounds present in the aqueous glucarate–borate–calcium(II) system. Borate ester formation was found to occur preferbly at the threo-3,4-position of glucarate. Two diastereoisomeric borate diesters of glucarate are the major calcium(II) co-ordinating species. Each borate diester contains two calcium(II) co-ordinating sites consisting of two carboxylate groups, two borate ester ring oxygens, and, depending on the α-CHOH configurations, up to two α-hydroxy groups. The overall calcium(II) co-ordinating strength of both borate diester diastereoisomers of glucarate is about equal, whereas this is not the case for the arabinonate diastereoisomers.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
